Process for treating waste from household waste incineration fumes and/or industrial waste

摘要

Process for treating the resu00ecduos purification of smoke incineration of domestic waste and / or industrial waste ", comprising the following steps: a) dessaliniza - if the waste (1)1) by washing the sodium carbonate (2) in sufficient quantity or slightly excess to solubilize all the salts including sulfates and precipitating the soluble calcium.The pH is more than 11; and then carry out a solid / liquid separation to obtain a cake dessalinizado (3); (b) leach - if this cake (3) from step (a) for sodium carbonate in quantidadAnd enough or slightly excess to obtain a reaction with lime in this cake or added, if necessary, the alkalinity needed for solubilization of the amphoteric metal.The pH is higher than 12.To obtain a solid / liquid separation by means of a cake (6) and a supernatant liquid (7) which is neutralized with carbon dioxide gas (8); then the solution is filtered and recovered to obtain, on the one hand,Metal hydroxide sludges (11) and, on the other hand, an aqueous solution of sodium carbonate (14) which can be recycled to step (b), and (c) neutralizing the pH between 6.5 and 8.5.The waste (6,6 ') from the step (b).